Yo Siqwrote a review of Airblaster Merino Wool Ninja Suit - Men's on October 22, 2014
Familiarity: I've put it through the wringer
Fit: True to size
I am on my 3rd Airblaster Ninja Suit. I purchased my first one 6 years ago and have NOT worn a 2-piece baselayer since. I will wear my Merino Ninja Suit with just a shell on hill from 20F to 45F and be perfectly comfortable. Under 20F, I'll throw on a flannel or sweater and be totally comfortable - still with just a shell. This is a truly versatile and essential product. Also, with the Merino Wool, I only have to wash it every 10 or so uses, which is very convenient. Just hang dry to get the stank out. I am 6'2" and 205 lbs, I wear an XL, but could wear a Large if I wanted it to be real snug. The stretch of the fabric is quite nice, so size selection depends more on personal fit preference. Lastly, the waistband zipper is perfect for pooping, have never had an issue and it is quite easy / quick to use without even taking off your jacket.